Project #73812 - Stat quiz 1&2

Question 1 

1.  
2.  

NonSmoker

Occasional 

Smoker

Regular 

Smoker

Heavy 

Smoker

Total

Men

433

42

71

37

583

Women

326

47

78

39

490

Total

759

89

149

76

1073

3. The table above, describes the smoking habits of a group of asthma sufferers. 
4. 18. If one of the 1073 people is randomly selected, find the probability that the person is a nonsmoker.

a.

0.404

  

b.

0.304

  

c.

0.707

  

d.

0.570

Question 2 

1. 20. A manufacturing process has a 70% yield, meaning that 70% of the products are acceptable and 30% are defective. If three of the products are randomly selected, find the probability that all of them are acceptable. 

a.

0.027

  

b.

0.221

  

c.

0.343

  

d.

0.429

Question 3 

1. A study conducted at a certain college shows that 53% of the school's graduates find a job in their chosen field within a year of graduation. Find the probability that among 7 randomly selected graduates, at least one finds a job in his or her chosen field within a year of graduating. 

a.

0.995

  

b.

0.988

  

c.

0.530

  

d.

0.143

Question 4 

1. 3. When two probability events are equally likely, we identify this probability as __________________ probability. 

a.

classical

b.

relative frequency

c.

subjective

d.

empirical

Question 5 

1. 15. Find the complement of an event A, given that P(A)=0.662. 

a.

1.511

  

b.

0.338

  

c.

1.662

  

d.

0

 

Question 6 

1. 21. You are dealt two cards successively ( without replacement) from a shuffled deck of 52 playing cards. Find the probability that both cards are black. 

a.

25/51

  

b.

1/2652

  

c.

25/102

  

d.

13/51

Question 7 

1. 1. A simple event is any collection of results or outcomes from a probability procedure. 

True 

False 

 

 

 

 

 

 

 

 

 

Question 8 

1.  
2.  

NonSmoker

Occasional 

Smoker

Regular 

Smoker

Heavy 

Smoker

Total

Men

433

42

71

37

583

Women

326

47

78

39

490

Total

759

89

149

76

1073

3. The table above, describes the smoking habits of a group of asthma sufferers.

 

17. If one of the smokers is randomly selected, find the probability that the person is a regular smoker given that the person is a women. 

a.

0.159

  

b.

0.073

  

c.

0.05

  

d.

0.523

 

Question 9 

1. 2. The Law of Large Numbers states that as a procedure is repeated again and again, the relative frequency probability of an event tends to approach it actual mathematical probability. 

True 

False 

Question 10 

1. On a multiple choice test, each question has 7 possible answers. If you make a random guess on the first question, what is the probability that you are correct? 

a.

1/7

  

b.

0

  

c.

1

  

d.

7

 

Question 11 

1. What is the probability of an event that is certain to occur? 

a.

1

  

b.

0.99

  

c.

0.95

  

d.

0.5

 

Question 12 

1. 14. Create the sample space of possible outcomes for flipping a coin twice. 

a.

HH HT TH TT

b.

HH HT TT

c.

HT TH

d.

HH TT HT HT

Question 13 

1. 5. The probability of an impossible event is 

a.

0

  

b.

1

  

c.

-1

  

d.

1/2

Question 14 

1. 11. Is it "unusual" to get a 12 when a pair of dice is rolled? 

a.

no

  

b.

yes

 

Question 15 

1. 4. Which of the following cannot be a probability? 

a.

-1

  

b.

0

  

c.

1/2

  

d.

1

Question 16 

1. 7. Express the indicated degree of likelihood as a probability value. 

 There is a 40% chance of rain tomorrow.

a.

0.60

  

b.

4

  

c.

0.40

  

d.

40

Question 17 

1. 13. A polling firm, hired to estimate the likelihood of the passage of an up-coming referendum, obtained the set of survey responses to make its estimate. The encoding system for the data is: 1=FOR 0=AGAINST. If the referendum were held today, estimate the probability that it would pass. 

0,1,1,0,0,1,0,1,1,0,0,0,1,0,1,0,0,0,1,0

a.

0.65

  

b.

0.4

  

c.

0.6

  

d.

0.5

Question 18 

1. 10. Two 6-sided dice are rolled. What is the probability that the sum of the two numbers on the dice will be 5? 

a.

8/9

  

b.

5/6

  

c.

1/4

  

d.

1/9

 

Question 19 

1.  
2.  

NonSmoker

Occasional 

Smoker

Regular 

Smoker

Heavy 

Smoker

Total    

Men

433

42

71

37

583

Women

326

47

78

39

490

Total

759

89

149

76

1073

3. The table above, describes the smoking habits of a group of asthma sufferers. 
4. If one of the 1073 people is randomly selected
5. 16. find the probability that the person is a man or a heavy smoker.

a.

0.545

  

b.

0.580

  

c.

0.614

  

d.

0.487

Question 20 

1. 12. Of 1338 people who came into a blood bank to give blood, 253 people had high blood pressure. Estimate the probability that the next person who comes in to give blood will have high blood pressure. 

a.

0.189

  

b.

0.24

  

c.

0.108

  

d.

0.157

 

Question 21 

1.  
2.  

NonSmoker

Occasional 

Smoker

Regular 

Smoker

Heavy 

Smoker

Total

Men

433

42

71

37

583

Women

326

47

78

39

490

Total

759

89

149

76

1073

3. The table above, describes the smoking habits of a group of asthma sufferers. 
4. 19. If one of the smokers is randomly selected, find the probability that the person is a heavy smoker and a man.

a.

0.071

  

b.

0.034

  

c.

0.543

  

d.

0.063

Question 22 

1. 6. An event is said to be _____________ is the probability is less than 0.05. 

a.

usual

b.

un-usual

c.

certain

d.

impossible

Subject Mathematics
Due By (Pacific Time) 06/14/2015 12:00 am
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